Headset

Alright, so i have a headset and it works fine on my pc mic and headphones, but when i plug it in to my mac only the headphones work. I went into the sound settings selected the line in input and it showed no activity on those little bars. Is this headset not compatible for my mac? if so do you guys know of any good headsets with a mic that work well on macs? thanks.

Also, what are the things called that plug into the usb port and then they have the ports for headphones and mic so it converts it? does anyone know where to get these cheap? Amazon? also if i bought a usb headset would that work on my mac?

Also, what are the things called that plug into the usb port and then they have the ports for headphones and mic so it converts it? does anyone know where to get these cheap? Amazon? also if i bought a usb headset would that work on my mac?

thanks.

I bought a usb logitech headset from best buy to use with my mac and it works awsome! I don't use it however at all. I think it cost me like 40 bucks or something. I would be willing to sell it to you. email me at themacguy@charter.net